CN211061741U

CN211061741U - High-power vertical cavity surface laser coupling device

Info

Publication number: CN211061741U
Application number: CN201922488646.XU
Authority: CN
Inventors: 郭进; 赵国顺
Original assignee: Beijing Settall Technology Development Co ltd
Current assignee: Beijing Settall Technology Development Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-07-21
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a high power vertical cavity surface laser coupling device relates to special laser fiber coupling output field for solve at present in the application of vertical cavity surface laser because the structural feature of this laser instrument, installation and debugging and the equal inconvenient problem of high power series connection. The device comprises: the heat sink of bottom, the vertical cavity face laser instrument of being connected with the heat sink, at the green lens sleeve pipe of vertical cavity face laser instrument top, assemble green lens, optic fibre and fiber optic sleeve pipe in proper order along the laser output direction of vertical cavity face laser instrument in green lens sleeve pipe to focus according to green lens assembles green lens sleeve pipe, green lens, optic fibre and fiber optic sleeve pipe. The method has wide requirements in the fields of military illumination, laser ranging, laser communication, laser typesetting and the like.

Description

High-power vertical cavity surface laser coupling device

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of special laser fiber coupling output and specifically relates to a high power vertical cavity face laser coupling device.

[ background of the invention ]

At present, in the application of a vertical cavity surface laser, due to the structural characteristics of the laser, the installation and debugging and the high-power series connection are inconvenient.

[ Utility model ] content

The utility model provides a high power vertical cavity face laser coupling device for solve at present in the application of vertical cavity face laser because the structural feature of this laser instrument, installation and debugging and the equal inconvenient problem of high power series connection.

The utility model discloses a high power vertical cavity face laser coupling device, include: the device comprises a heat sink at the bottom, a vertical cavity surface laser connected with the heat sink, a green lens sleeve above the vertical cavity surface laser, a green lens, an optical fiber and an optical fiber sleeve which are sequentially assembled in the green lens sleeve along the laser output direction of the vertical cavity surface laser, and the green lens sleeve, the green lens, the optical fiber and the optical fiber sleeve are assembled according to the focal length of the green lens.

The laser comprises a vertical cavity surface laser, a green lens, an optical fiber and an optical fiber sleeve, wherein the green lens sleeve, the green lens, the optical fiber and the optical fiber sleeve are assembled according to the focal length of the green lens, and particularly, the output power of an optical fiber end is adjusted to be 78-92% of the standard curve power of the vertical cavity surface laser.

Wherein, still include: and the limiting ring is positioned between the green lens and the optical fiber sleeve.

Wherein, still include: and the heat sink bracket is positioned on the periphery of the heat sink.

The light inlet area of the green lens is larger than the light emitting area of the vertical cavity surface laser.

The length of the optical fiber sleeve is selected according to the focal length of the green lens, and the length precision of the optical fiber sleeve is 0.01 mm.

And the incident end and the output end of the green lens are subjected to anti-reflection treatment.

The vertical cavity surface laser is connected with a heat sink, and specifically, the vertical cavity surface laser is welded in the middle of the heat sink through a jig by using tin-gold alloy.

Wherein the standard curve power of the vertical cavity surface laser is 200 milliwatts, 500 milliwatts, 1 watt, 2 watts, 5 watts, 10 watts or 15 watts.

The utility model discloses a high power vertical cavity face laser coupling device can solve the problem that vertical cavity face laser can not optic fibre output for a long time and vertical cavity face laser because the problem of structure can not have more powerful power to establish ties, has extensive demand in fields such as military illumination, laser rangefinder, laser communication, laser typesetting.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a high-power vertical cavity surface laser coupling device according to embodiment 1 of the present invention;

fig. 2 is a flowchart of steps of a high power vertical cavity surface laser coupling method according to embodiment 2 of the present invention.

[ detailed description ] embodiments

The inventor researches and discovers that the light sources of the existing vertical cavity surface lasers have no optical fiber coupling output, so that the installation of the vertical cavity surface lasers in the industry is very inconvenient due to the self-structure heat dissipation problem, and the high-power output is almost impossible, so that a brand-new coupling mode for the vertical cavity surface lasers is needed, the random output of the high-power laser series connection of the vertical cavity surface lasers and the installation position are solved, the problem that the light sources of the vertical cavity surface lasers are output under the condition of limited space or the vertical cavity surface lasers with high power need to be connected in series is solved, and the laser ranging device has wide requirements in the fields of military illumination, laser ranging, laser communication, laser typesetting and the like.

Embodiment 1, the high power vertical cavity surface laser coupling device of this embodiment, as shown in fig. 1, includes: a heat sink 101 at the bottom, a vertical cavity surface laser 102 connected to the heat sink 101, a greenlens sleeve 103 above the vertical cavity surface laser 102, a greenlens104, a spacing ring 105, an optical fiber 106, and an optical fiber sleeve 107 sequentially fitted in the greenlens sleeve 103 along the laser output direction of the vertical cavity surface laser 102, and the greenlens sleeve 103, the greenlens104, the optical fiber 106, and the optical fiber sleeve 107 are fitted according to the focal length of the greenlens 104. A heat sink bracket 108 is also provided around the heat sink 101.

In a specific implementation, the material of the heat sink 101 may be oxygen-free copper, aluminum nitride, aluminum, or other good thermal conductor, and its shape may be square, rectangular, circular, or any shape according to the structural design. The vertical cavity surface laser 102 is soldered in the middle of the heat sink 101 through a jig by using a tin-gold alloy, and the output power (standard curve power) of the vertical cavity surface laser 102 can use a chip with any output power, which can be any power of 200 milliwatts, 500 milliwatts, 1 watt, 2 watts, 5 watts, 10 watts and 15 watts. The greenlens sleeve 103 is made of a material satisfying fiber coupling, and may be specifically metal or ceramic. The incident end and the output end of the greeenlens 104 are subjected to anti-reflection treatment, the area of the light inlet of the greeenlens 104 is larger than the light-emitting area of the vertical cavity surface laser 102, and the efficiency of output power is ensured. The fiber ferrule of the optical fiber 106 may be a metallic material or a ceramic material or other composite material that satisfies fiber coupling. The optical fiber sleeve 107 can be made of ceramic, the length of the optical fiber sleeve 107 is selected according to the focal length of the greenlens104, and the length precision of the optical fiber sleeve 107 needs to be ensured to be 0.01 mm. Finally, after energy debugging, the output power debugged to the end of the optical fiber 106 is 78% to 92% of the power of the standard curve of the vertical cavity surface laser 02.

In the specific vertical cavity surface coupling optical fiber operation, firstly, the heat sink 101 of the vertical cavity surface is fixed on a constant temperature jig, the jig is heated to 220 degrees, the vertical cavity surface laser 102 is attached after the gold-tin alloy is melted, at the moment, the heating is stopped, and the temperature of the constant temperature jig is controlled to be 25 degrees. The greenlens104, the limiting ring 105, the fiber ferrule 107 and the optical fiber 106 are sequentially placed in the greenlens sleeve 103, and the heat sink bracket 108 is inserted while fixing the heat sink bracket 108. At this time, the vertical cavity surface laser 102 is energized (the current is higher than the threshold current) to output optical power, the power output of the vertical cavity surface laser 102 is detected from the end of the optical fiber 106 by checking, after comparison according to the power curve of the factory shipment of the vertical cavity surface laser 102, the front, back, up, down, left and right fine adjustment is performed on the greenlens sleeve 103, and the adjustment is performed until the output power is between 78 and 92 percent of the curve power, so that the optimal adjustment angle is obtained. At this time, the previously mounted

greenlens sleeves

103, 104, stopper rings 105, fiber sleeves 107, and optical fibers 106 were uv-cured with an optical uv adhesive. The power to the vertical cavity surface laser 102 is turned off, and the vertical cavity surface laser 102, the heat sink 101, and other parts are removed from the fixture. The entire coupling process is completed.

Embodiment 2 and the coupling method of the high-power vertical cavity surface laser according to this embodiment are implemented by using the coupling apparatus of the high-power vertical cavity surface laser according to embodiment 1, and as shown in fig. 2, the coupling method includes the following steps:

and S201, powering up the vertical cavity surface laser to enable the vertical cavity surface laser to output power according to a standard curve.

S202, detecting the light ray end output power of the optical fiber, if the light ray end output power is not in the range of 78-92% of the standard curve power of the vertical cavity surface laser, turning to the step S203, otherwise, turning to the step S204;

s203, fine adjustment is carried out on the position and the angle of the greenlens sleeve, and the step S202 is returned;

s204, curing the greenlens sleeve and the components inside the greenlens sleeve.

In the specific operation of coupling the optical fiber with the vertical cavity surface, firstly, fixing the heat sink of the vertical cavity surface on a constant temperature jig, heating the jig to 220 degrees, sticking a vertical cavity surface laser after the gold-tin alloy is melted, stopping heating at the moment, and controlling the temperature of the constant temperature jig to be 25 degrees. And placing the greenlens, the limiting ring, the optical fiber sleeve and the optical fiber in the greenlens sleeve in sequence, inserting the heat sink support, and fixing the heat sink support. At the moment, the vertical cavity surface laser is powered on (the current is higher than the threshold current), so that the vertical cavity surface laser outputs optical power, the power output of the vertical cavity surface laser is detected from the optical fiber end through checking, after comparison according to a power curve of the vertical cavity surface laser which is delivered from a factory, front, back, up, down, left and right fine adjustment is carried out on a greenlens sleeve, and the adjustment is carried out until the output power is 78-92% of the curve power, namely the optimal adjustment angle is obtained. At the moment, uv curing is carried out on the greenlens sleeve, the greenlens, the limiting ring, the optical fiber sleeve and the whole optical fiber which are installed before by using optical uv glue. The power supply of the vertical cavity surface laser is turned off, and the vertical cavity surface laser, the heat sink and other parts are taken down from the jig. The entire coupling process is completed.

The description of the invention herein is merely illustrative and exemplary and is not intended to limit the scope of the invention to the embodiments described above. Variations and modifications of the embodiments disclosed herein are fully possible, and alternative and equivalent various components of the embodiments are well known to those skilled in the art. It will also be apparent to those skilled in the art that the present invention may be embodied in other forms, structures, arrangements, proportions, and with other components, materials, and parts, and that other modifications and variations, without departing from the spirit or essential characteristics thereof, may be made to the embodiments disclosed herein.

Claims

1. A high power vertical cavity surface laser coupling device, comprising: the device comprises a heat sink at the bottom, a vertical cavity surface laser connected with the heat sink, a green lens sleeve above the vertical cavity surface laser, a green lens, an optical fiber and an optical fiber sleeve which are sequentially assembled in the green lens sleeve along the laser output direction of the vertical cavity surface laser, and the green lens sleeve, the green lens, the optical fiber and the optical fiber sleeve are assembled according to the focal length of the green lens.

2. The high power vcsel coupling device of claim 1 wherein the green lens sleeve, the green lens, the fiber and the fiber sleeve are assembled according to the focal length of the green lens, and particularly wherein the output power of the fiber end is adjusted to be between 78% and 92% of the normal curve power of the vcsel.

3. The high power vertical cavity laser coupling device of claim 1 further comprising: and the limiting ring is positioned between the green lens and the optical fiber sleeve.

4. The high power vertical cavity laser coupling device of claim 1 further comprising: and the heat sink bracket is positioned on the periphery of the heat sink.

5. The high power VCSEL coupling device of claim 1, wherein a light entrance area of the green lens is larger than a light emitting area of the VCSEL.

6. The high power vertical cavity surface laser coupling device according to claim 1, wherein the length of the optical fiber sleeve is selected according to the focal length of the green lens, and the precision of the length of the optical fiber sleeve is 0.01 mm.

7. The high power vertical cavity surface laser coupling device as claimed in claim 1, wherein the incident end and the output end of the green lens are anti-reflection treated.

8. The high power vertical cavity laser coupling device of claim 1, wherein the vertical cavity laser is connected to a heat sink, and more particularly, the vertical cavity laser is soldered to the heat sink through a jig using tin-gold alloy.

9. The high power vertical cavity surface laser coupling device of claim 2 wherein the standard curve power of the vertical cavity surface laser is 200 mw, 500 mw, 1 w, 2 w, 5 w, 10 w or 15 w.